1. Provide English vocabulary to everyone for free.
2. Help end world hunger by providing rice to hungry people for free.

While a fun place to test your linguistic mettle, this website as noted above, has a greater purpose to serve by means of donating rice to help feed the hungry through the United Nations World Food Program.

Each word you get right results in a donation of 20 grains of rice. Sponsorships secured on the website convert your noodle power into grains of rice for FreeRice.com to distribute.

According to the National Post, FreeRice.com (since its creation in October, 2007) has generated donations of 15,295,699,110 grains of rice. Last night, I was playing for a while and donated over 7,000 grains of rice and loved every minute of it.